SOLUTION: Multiply and Divide Polynomials - including FOIL I want to make sure that my answers are correct. Please let me know. (ab)(ab)= my answer is A^2+ b^2 + ab + ba With this

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Question 257289: Multiply and Divide Polynomials - including FOIL
I want to make sure that my answers are correct. Please let me know.
(ab)(ab)= my answer is A^2+ b^2 + ab + ba
With this one, I just want to make sure that ab & ba aren't able to be combined. I don't think so, but please let me know.

(y-6)(y+3) = my answer is y^2 - 3y - 18
I'm pretty confident about this one.
Last one:
Find the area of a rectangle

one side is 9x and the other side is 3x^2 + 2
so, a= l X w
27x^3 + 18x
I think I am right.
Thank you!!!

Found 2 solutions by ankor@dixie-net.com, jim_thompson5910:
Answer by ankor@dixie-net.com(22740)   (Show Source): You can put this solution on YOUR website!
Multiply and Divide Polynomials - including FOIL
I want to make sure that my answers are correct. Please let me know.
(ab)(ab)= my answer is A^2+ b^2 + ab + ba
With this one, I just want to make sure that ab & ba aren't able to be combined. I don't think so, but please let me know.
:
ab*ab = a^2b^2 and that's it, a big mistake on my part
:
:
(y-6)(y+3) = my answer is y^2 - 3y - 18
I'm pretty confident about this one.
:
This is right!
:
:
Last one:
Find the area of a rectangle
one side is 9x and the other side is 3x^2 + 2
so, a= l X w
27x^3 + 18x
:
Right also!

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
# 1

If it's , then .


If it's , then...


Start with the given expression.


Now let's FOIL the expression.


Remember, when you FOIL an expression, you follow this procedure:


Multiply the First terms:.


Multiply the Outer terms:.


Multiply the Inner terms:.


Multiply the Last terms:.


---------------------------------------------------
So we have the terms: , , , and


Now add every term listed above to make a single expression.


Now combine like terms.


So FOILs to .


In other words, .

============================================================

# 2





Start with the given expression.


Now let's FOIL the expression.


Remember, when you FOIL an expression, you follow this procedure:


Multiply the First terms:.


Multiply the Outer terms:.


Multiply the Inner terms:.


Multiply the Last terms:.


---------------------------------------------------
So we have the terms: , , ,


Now add every term listed above to make a single expression.


Now combine like terms.


So FOILs to .


In other words, .


============================================================

# 3

Start with the area equation.


Plug in the given length and width.


Distribute


Multiply


So the area is square units.

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